140 Proceedings of the Royal Society of Victoria. 



Locality. — Eocene beds of Table Cape, Tasmania. Two double 

 valves and a right valve. 



Observations. — This species has been confounded by Mr. R. M. 

 Johnston ((xeo. Tas., p. 233) and Professor Tate (Lam. II., 1887, 

 p. 172) with Zenatiopsis angustata, Tate, from which however it 

 may be distinguished by its much greater delicacy, its different 

 shape, straight or concave dorsal margin, parallel ventral margin, 

 and the absence of the general posterior attenuation present in 

 that species. 



127. Myodora austral is, K M. Johnston. 



Id., R. M. Johnston, P.R.S.Tas., 1879, p. 40. 



Id., Tate, Lam. II., 1887, pp. 174, 175, pi. xvii., figs. \Qa, IQb. 



128. Myodora brevis, Sowerby. 



Pandora brevis, Sowerby, App. to Stutchbury's Sale Cat., p. 3, 

 fig. 2. 



Myodora brevis, E. A. Smith, Voy. Chall. Zoo., vol. xiii., 1885, 

 Lamellibranchs, p. 64. 



Myodora ceqiiilateralis, R. M. Johnston, P.R.S.Tas., 1879, p. 40. 



Myodora ccquilateralis, Tate, Lam. II., 1887, p. 176, pi. xvii., 

 fig. 8. 



129. Corbula ephamilla, Tate. 



C. sulcati.7, McCoy (non Lamarck), A.M.N.H., 1866, and 

 Exhibition Essay, 1866, p. 19. 



C. sulcata, T. "Woods (non Lamarck), P.R.S.Tas., 1874, p. 16. 



C. ephamilla, Tate, P.R.S.Tas, 1884, pp. 213 and 229 ; also 

 Lam. II., 1887, p. 176, pi. xvii., figs. 13^-13^ and 14. 



Observations. — Sir Frederick McCoy states of this species : — 

 " The only other excessively common living species of shell in 

 our miocene or oligocene beds is the Corbula sulcata. Lam., of 

 the tropical seas of the west coast of Africa, whence I have 

 procured living specimens, so that, as in the other cases of 

 identity of species spoken of, I might not run the chance of 

 misleading my readers by erroneous identifications based on 

 comparisons with figures or descriptions only." Professor Tate, 

 however, in the face of this very clear decision, says, when 

 naming and describing our fossil, he has " no means of ascer- 



